cooper



(No Model.) 7 2 Sheets-Sheet 1.

W. COOPER & G. P. HAMPTON.

ROTARY REGIPROGATING PUMP. No. 511,044, Patented Dec. 19, 1893.

ZOZ'ZZzam ope/7" Geo Tye/j? MZ WY OK'D.

UNITED STATES PATENT OFFICE.

' W'ILLIAM COOPER. AND GEORGE P. HAMPTON, OE MINNEAPOLIS, MINNESOTA,ASSIGNORS TO THE COOPER-HAMPTON ELECTRIC COMPANY, OF SAME PLACE.

ROTARY RECIPROCATING PUMP.

SPECIFICATION forming part of Letters Patent No. 511,044, dated December19, 1893. Application filed October 31, 1892. Serial No. 450,429- (Nomodeld To all whom it may concern.-

Be it known that We, WILLIAM COOPER and GEORGE P. HAMPTON, of the cityof Minneapolis, county of Hennepin, State of inne- 5 sota, have inventedcertain Improvements in Rotary, Reciprocating Pumps, of which thefollowing is a specification.

Our invention relates to a pump adapted for use at either high or lowspeeds, and cs- 10 pecially adapted for use with electric motors orother constant rotary power the pumps being either coupled direct withthe motor shaft, or belted or geared thereto.

The object of the invention is to provide a :5 pump which shall have arotary movement adapting it for use in connection with electric motors,and which at the same timeshall have a reciprocating movement oroperation, securing for the pump a durability and efli- 2o ciency equalto that of the old type reciproeating pumps.

To this end our invention consists in the combination with a suitablecasing provided with inlet and outlet ports, of a shaft extend-i 2 5 inginto said casing, a drum provided thereon and covering said inlet andoutlet ports and provided with a series of barrels or cylinders,plungers arranged in said barrels, a plate or disk with which saidplungers continuously 3o engage, said plate arranged about said shaftand adapted to be adjusted at any incline with respect to the same toincrease or decrease the throw of said plungers, said disk or drum beingsecured upon the shaft while 3 5 the other portion is independenttherefrom, all substantially as hereinafter described and particularlypointed out in the claims.

, The invention will be more readil y understood by reference to theaccompanying drawings, in which- Figure 1 is a vertical longitudinalsection of a. pump embodying our invention. Fig. 2 is a verticalelevation of the head of the easing containing the inlet and outletports seen on the line m-m of Fig.1. Fig. 3 is a transverse verticalsection on the line y-y of Fig. 1. Fig. 4: is a perspective view showingthe tilting dislgthe worm for operating the same, and the plungersattached to the ,disk the outline of the casing being shown in dotted 50lines.

As shown in the drawings, 2 represents a cylindrical casing providedwith the head 3, containing the inlet and outlet ports 4 and 5 and thebearing 6 for the shaft 7 the other end of which shaft is supported inthe bearing 8 of the opposite head 9, which is provided with thestuffing box 10 to prevent leakage around the shaft. Upon the shaft ismounted the drum 11 provided with a series of barrels or cylinders 12,preferably six in number as indicated by dotted lines in Fig. 2, andeach containing a piston or plunger 13 provided with metal packing rings14: for making close joints with the walls of the cylin-. 65 ders. Theshaft is made in two parts; the short section 7 having the threadedinner end 15- screwed into the forward ends of the drum 11, and havingthe threaded outer end 16 to receive the two locking nuts 17 andlS bymeans of which the end of the drum is adjusted with respect to the innerface of the head 3.

In'orderto prevent friction between the locking nuts forming a thrustbearing, we provide the two steel bearing rings 19 between which arearranged a series of balls 20 held therein by the loose outer ring21thus the locking nuts bearing upon the outer ring 21 engage theanti-friction ball bearings, which in turn roll upon the inner ring 19rest ing against the head. The other part 22 of the shaft is longerandis that to which the power is attached. The drum is prevented fromturning upon the shaft by the key or feather 23, and the shaft isprevented from 85 driving into the drum by the shoulder or collar 24formed thereon. Between the rear end of the drum and the head 9 is aconsiderable space in which isarranged the tilting disk,

which part is composed of the tilting ring 25 having the trunnions 26securely pivoted in the boxes 27 of the casing, and at right angles tothe bridge 28 formed between the two ports& and 5. In order that theplungers may continuously engage the tilting disk, which isin fact acam,without friction thereon, the tilting dish is made in two parts-one thetrunnioned ring by which the proper inclination is secured, and theother the inner ring 29 arranged to revolve with the shaft, be ngconnected therewith by the universal oint made up of the part 30,trunnioned in the ring 29, and the part 31 trunnioned in the part 30.The part 31 issecured on the shaft by the feather 32 so that it revolveswith the same, while at the same time the shaft may move backward orforward with respect to the same, as required for the proper adj ustmentof the drum with respect to the port surface of the head 3, before whichit revolves. The ring 29 has the groove in its rear side adapted toaccommodate the two sets of ball bearings 33 and 34, which operate onthe two sides of the annular rib 35, projecting from 1 the inner side ofthe tilting ring 25. On the back of the ring 29 is the face ring 36hearing against the ball bearings 34. The plungers 13 are connected withopposite points upon the revolving ring 29, by the short connecting rods43, having the ball ends fitting in ball sockets in the plungers and thering and secured in place by removable collars 44, preferably madeadjustable in order to take up the wear of the sockets. In the top ofthe casing is a large opening 37, above which the housing or box 38 issecured. WVithin the box is a worm 39 engaging the lugs 40 on the top ofthe tilting disk. The worm is arranged on the shaft 41 which projectsout of the housing, and upon which is arranged the operating lever 42 ora suitable wheel, by means of which the worm may be rotated to tilt thedisk forward or back from the perpendicular to increase or decrease thecapacity of the pump or to entirely stop the passage of watertherethrough, Where the water is arranged to flow through the pump, therear set 34: of the ball bearings in the tilting disk may be dispensedwith as there will be no forward strain upon the plungers to draw therevolving ring out of the tilting ring.

The operation of the pump is as follows: At the time of starting thepump the tilting disk is turned up into a perpendicular position withrespect to the shaft. The power is then applied to revolve the shaft atany desired speed, revolving therewith the drum, the ring 29 and theplungers. Inasmuch as the disk is at right angles with the shaft, itwill be seen that though the drum may revolve very rapidly the positionof the plungers therein will not be altered. Upon throwing the disk atan incline, however, the plungers are rapidly drawn in and out as theyflow up and down the incline of the disk. .The bridge 28 is of the samewidth as the diameter of the pointed ends of the cylinders 12 and as thedisk is pivoted at right angles with the bridge it will be seen that theplungers reach their maximum stroke forward or back just as the upperand lower cylinders containing them, are closed by the upper ends of thebridge 28. As the drum continues to revolve these two cylinders arecarried past the bridge, and the forward plunger be ing carried up theincline of the tilting disk is drawn back to suck in a load from theinlet port, while the receded plunger is gradually forced forwardpassing down the incline, to force its load into the outlet port. Itwill be seen, that the drum being revolved many times a minute thisaction is so rapidly repeatedthat the water is practically carried fromthe inlet port into the outlet port continuously and without perceptiblefluctuation in the stream discharge from the outlet port. To reverse theaction of the pump while the revolving parts thereof continue the samespeed and the same direction of revolution, it is only necessary to tiltthe disk into the opposite position, when the relations of the plungerswith respect to the inlet and outlet ports are exactly changed, for,where upon one side the pistons were moving forward down the incline ofthe disk, they will then be continuously drawn back from what was beforethe outlet port. As a continuous stream is delivered from our pump itsload is constant, thereby adapting it for use direct with electricmotors which a fluctuating load would seriously affect.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent 1. The combination with the casing, providedwith inlet and outlet ports, of a shaft extending into the said casing,a drum arranged upon said shaft and provided with a series of barrelshaving open ends arranged to pass over said ports, plungers arranged insaid barrels, a plate or disk with the side of which said plungerscontinuously engage, and relatively to which they occupy a substantiallylateral position, said plate or disk arranged about said shaft andadapted to be adjusted to assume any incline with respect to the samewithout stopping or changing the speed of said pump or motor, and saiddisk or said drum being secured upon the shaft while the other portionis independent thereof, substantially as described and for the purposespecified.

2. The combination with the casing provided with inlet and outlet ports,of the shaft extending into said casing, the drum secured upon saidshaft and provided with a series of barrels having openings arranged topass over said ports as the drum is rotated, plungers arranged in saidbarrels,'adisk against which said plungers are held, said diskbeingswung upon trunnions arranged in said casing, and means provided inconnection with said disk for tilting the same to vary the stroke ofsaid pistons at will, substantially as described.

3. The combination with the casing provided with inlet and outlet ports,of a shaft extending into the said casing, a drum fixed on said shaft,said drum provided with a series of barrels, having openings adapted topass over said ports, plungers arranged to operate in said barrels,connecting rods extending from the same, a tilting disk pivoted in saidcasing, a revoluble ring arranged in said disk and in which saidconnecting rods are secured and said ring b'eingfixed upon the shaft,and-adapted to revolve within said tilting disk substantially asdescribed and for the purpose specified.

4. lhe combination with a casing having one end provided with inlet andoutlet ports,

of a shaft extending into said casing, a drum arranged within saidcasing and fixed upon said shaft, barrels provided in said drum and"having openings to pass over said ports, plungers provided in saidbarrels, a tilting disk pivoted in said casing and surrounding saidshaft, means for tilting the same,a ring or disk revolublyarranged uponsaid tilting'disk and universally pivoted upon said shaft, and connecting rods for securing-said plungers to said ring, substantially asdescribed.

5. The combination with the casing having an end provided with inlet andoutlet ports, a shaft extendinginto said casing, a drum arranged thereonand having barrels provided with openings to pass over said ports,plungers arranged in said barrels, a tilting disk pivoted upon trunnionshaving hearings in said casings, a revoluble ring arranged within saiddisk, a universal joint connection between said ring and said shaft,connecting rods extending between said ring and said plungers, a worm,gear fixed in said casing and engaging said disk,and means provided onthe outside of said casing to operate the same to tilt said disk,substantially as described.

6. The combination with the closed casing having inlet and outlet ports,of a shaft extending into the same, a drum arranged thereon, and havingbarrels provided with openings for the reception and discharge of liquidfrom and into said ports, plungers arranged in said barrels, a tiltingdisk pivoted in said casing and with which extensions of said plungersare adapted to continuously engage, a box provided on said casing, awormarranged therein, and engaging the periphery of said disk and the leverprovided in connection therewith for operating the same, substantiallyas described.

'7. The combination with the inclosingcase, of ports provided therein, abridge separating said ports, a shaft extending into said casing, a drumprovided thereon, and having barrels provided with openings ofsubstantially the gitudi nal barrels having openings to pass over saidinlet and outlet ports, plungersor pistons arranged in said barrels, atransversely pivoted tilting disk against the side of which saidplungers are continuously held and means for swinging or tilting saiddisk to change the throw of said pistons acting against the same as acam, substantially as and for the purpose specified.

9. The combination, with a face disk provided with inlet and outletchambers and ports, of a drum provided with a series of longitudinalbarrels having openings to pass over said, inlet and outlet ports,plungers or pistons arranged in said barrels, a transversely pivotedtilting disk, and anti-friction mechanism interposed between saidplungers and said tilting disk and by means of which said plungers arecontinuously held in engagement therewith, and means for swinging ortilting said disk to change the throw of said pistons, substantially asdescribed. 7

10. The combination, with a face disk having inlet and outlet ports, ofa drum, one end of which is adapted to revolve before said disk, saiddrum having a series of open ended barrels, plungers or pistons arrangedin said barrels, an inclined disk concentric with said drum and facedisk, a revoluble anti-friction ring arranged within said disk andconnections or ties between said ring and said plungers, substantiallyas described and for the purpose specified.

11. The combination,with the face disk having inlet and outlet ports, ashaft revoluble with respect thereto, a drum abutting said disk andhaving a series of open ended barrels, plungers or pistons in saidbarrels, an inclined disk concentric with said shaft, a ring mounted inanti-friction bearings in said disk and whereto said plu ngers areconnected, and said ring being universally pivoted on said shaft torevolve therewith and with said d ruin, substantially as described.

12. The combinatiomwith the face diskhaving the inlet and outlet portsand chambers, of the shaft concentric with said disk, a thrust bearingfor said shaft in said disk, a drum having a series of barrels and fixedon said shaft and one end thereof abutting said disk, an inclined diskopposite the other end of said drum and concentric with the shaft, anantifriction ring revoluble in said disk and fixed onsaid shaft, saidring being universally pivoted on said shaft, and plungers in saidbarrels and connected with said ring, all

substantially as and for the purpose specified.

In testimony whereof we have hereunto set our hands this 20th day ofOctober, A. D.

XVILLIAM COOPER. GEORGE P. HAMPTON. In presence ofa F. S. LYON, G. G.HAWLEY.

